Elizabeth M Niespolo^1,2, Warren D. Sharp¹, Robert Glass³, Carolyn Crow⁴, Benjamin Jacobsen⁵, Weisz David³, Christian A Tryon⁶, Graham Avery⁷, J. Tyler Faith⁸, Christopher Henshilwood⁹, Richard Klein¹⁰, Jason E. Lewis¹¹, Alex Mackay¹², Kathryn L. Ranhorn¹³, Teresa Steele¹⁴, Karen Van Niekerk⁹ and Giday W WoldeGabriel¹⁵, (1)Berkeley Geochronology Center, Berkeley, CA, United States, (2)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (3)Lawrence Livermore National Laboratories, Livermore, United States, (4)University of Colorado - Boulder, Boulder, United States, (5)Lawrence Livermore Nat. Lab., Livermore, CA, United States, (6)Harvard University, Anthropology Department, Cambridge, MA, United States, (7)Iziko Museums of South Africa, Cape Town, South Africa, (8)University of Utah, Salt Lake City, United States, (9)University of Bergen, Bergen, Norway, (10)Stanford University, Anthropology, Stanford, CA, United States, (11)Stony Brook University and Turkana Basin Institute, Stony Brook, NY, United States, (12)University of Wollongong, Wollongong, Australia, (13)George Washington University, Center for the Advanced Study of Human, Washington, DC, United States, (14)University of California, Davis, Anthropology, Davis, CA, United States, (15)Newport News Nuclear BWXT/Tetra Tech, Los Alamos, NM, United States